1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
WITCHER [35]
2 years ago
15

Solve each equation by completing the square. X^2 +2x-5=0 N^2-20n+2=4

Mathematics
1 answer:
Dennis_Churaev [7]2 years ago
8 0

Step-by-step explanation:

x² + 2x - 5 = 0

that is the same as

x² + 2x + 1 = 6

(x + 1)² = 6

x + 1 = ±sqrt(6)

x = -1 ± sqrt(6)

x1 = -1 + sqrt(6)

x2 = -1 - sqrt(6)

n² - 20n + 2 = 4

this is the same as

(n - 10)² = 102

n - 10 = ±sqrt(102)

n = 10 ± sqrt(102)

n1 = 10 + sqrt(102)

n2 = 10 - sqrt(102)

You might be interested in
To make fuel for the main engines of a space shuttle, 102,619.377 kilograms of liquid hydrogen and 616,496.4409 kilograms of liq
crimeas [40]

Answer:

There are 719,115.8179 KG of fuel stored in the external tank

Step-by-step explanation:

102619.377 + 616496.4409 = 719,115.8179

8 0
3 years ago
Find the area of the shapes
Dmitry [639]

Answer:

1. 800 cm squared

2. 152 cm squared

Step-by-step explanation:

let break it down

1. 800 cm squared

20 * 7 = 140

20 * 6 = 120

38 - 20 = 18

30 * 18 = 540

now add all of them together

140 + 120 + 540

100 + 100 + 500 = 700

40 + 20 + 40 = 100

700 + 100 = 800 cm squared

2. 152 cm squared

16 * 10 = 160

2 * 2 + 2 * 2 = 4 + 4 = 8

160 - 8 = 152 cm squared

5 0
3 years ago
The total of 36, 78, , 475, and 620 is
kow [346]

Answer:1209

Step-by-step explanation: 36+78 gives you 114, 114+475 gives you 589 then 589+620 brings you to the final answer 1209.

8 0
3 years ago
Find the area of the sector.<br> 1350<br> 18 km
harina [27]

Answer:

21870 km^2

Step-by-step explanation:

Area of sector=1/2r^2(theta)

Where r=18 km and theta=135

Area of sector=1/2(18)^2(135)

=1/2(324)(135)

=1/2(43740)

=21870 km^2

7 0
3 years ago
Read 2 more answers
There are four main steps in building a Monte Carlo simulation: select probability distribution(s); run the simulation model thr
trapecia [35]

Answer:

random

Step-by-step explanation:

Monte Carlo simulation is a technique which is used to analyze the impact of risk and uncertainty in financial projects and forecasting models. It helps to understand the potential outcomes to better understand the decision based on risk level. It analyzes the probability of different outcomes by intervention of random variables.

4 0
4 years ago
Other questions:
  • Suppose the integral from 2 to 8 of g of x, dx equals 12, and the integral from 6 to 8 of g of x, dx equals negative 3, find the
    13·1 answer
  • the number of potatoes, p, is four more than half the number of green beans, g. which expression represents the number of potato
    13·1 answer
  • A rectangular parking lot has a perimeter of 232 feet. The length of the parking lot is 36 feet less than the width. Find the le
    13·1 answer
  • If f(x)=sqrt 1\2x-10+3, which inequality can be used to find the domain of f(x)?
    11·1 answer
  • Divide 7/24 by 35/48 and reduce the quotient to the lowest fraction
    7·1 answer
  • HELP AND FAST 16 POINTS HURRY
    13·1 answer
  • Rahul simplified an expression. His work is shown below.
    7·2 answers
  • Math help help. Eveheh
    7·2 answers
  • What is the area of the figure composed of a parallelogram, a square, and a rectangle?
    15·1 answer
  • Nick needs 75 yards of wire for a project. If the wire is only sold on spools which hold 6 feet of wire, how many spools will he
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!